Galaxy S4 details emerge as Samsung gears up for this week's launch.(Photo:agencies)

Samsung will take over New York City's Radio City Music Hall on Thursday to unveil its new Galaxy S4 Android smartphone. But thanks to Samsung's marketing team and some leaked images, phone-watchers are starting to put some of the details together ahead of the big reveal.

Today Samsung has released the second teaser video for the phone and event. The video picks up where the last one left off - Jeremy Maxwell, a young boy, has the phone in his possession, but Samsung has told him he cannot show it to anyone or take it out of the box. Jeremy does say in the video that it's his "favorite color" and that its "unreal" and "beautiful." That's not all very revealing, but it does imply that the phone will come in a selection of colors. Currently, the Galaxy S 3 comes in a "pebble blue" and "marble white."

But beyond Samsung's controlled marketing, other details have started to emerge about the phone. Purported photos of the device have been posted on Chinese forums and discovered by posted by Sammyhub.com. In these photos, the Galaxy S4 appears to have a similar design to the Galaxy Note 2 and a high-resolution 1080p display.